Collect dirty pages and perform writeout when everything else is done.
Signed-off-by: Christoph Lameter <[email protected]>
---
mm/vmscan.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
Index: linux-2.6/mm/vmscan.c
===================================================================
--- linux-2.6.orig/mm/vmscan.c 2007-08-19 23:53:43.000000000 -0700
+++ linux-2.6/mm/vmscan.c 2007-08-19 23:53:47.000000000 -0700
@@ -1273,6 +1273,7 @@ static unsigned long balance_pgdat(pg_da
* this zone was successfully refilled to free_pages == pages_high.
*/
int temp_priority[MAX_NR_ZONES];
+ LIST_HEAD(laundry);
loop_again:
total_scanned = 0;
@@ -1347,7 +1348,7 @@ loop_again:
temp_priority[i] = priority;
sc.nr_scanned = 0;
note_zone_scanning_priority(zone, priority);
- nr_reclaimed += shrink_zone(priority, zone, &sc, NULL);
+ nr_reclaimed += shrink_zone(priority, zone, &sc, &laundry);
reclaim_state->reclaimed_slab = 0;
nr_slab = shrink_slab(sc.nr_scanned, GFP_KERNEL,
lru_pages);
@@ -1374,6 +1375,7 @@ loop_again:
* OK, kswapd is getting into trouble. Take a nap, then take
* another pass across the zones.
*/
+ throttle_vm_writeout(GFP_KERNEL);
if (total_scanned && priority < DEF_PRIORITY - 2)
congestion_wait(WRITE, HZ/10);
@@ -1404,7 +1406,8 @@ out:
goto loop_again;
}
-
+ nr_reclaimed += shrink_page_list(&laundry, &sc, NULL);
+ release_lru_pages(&laundry);
return nr_reclaimed;
}
--
-
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